Dalen Gardeneer 100055888 Gardeneer by Dalen Solar Action Owl Natural Scarecrow Device, 18in, 18 in, Yellow Life-like, Natural Enemy Scarecrow helps add in the repelling birds and pests while adding charm Frightens almost all birds. However, it will actually attract crows since owls and crows are mortal enemies. For chemical-free pest control, the SOL-R Action Owl helps aid in the protecting lawns and gardens from pests with timed, yet natural, solar-powered movement  no batteries required Movement is powered by the suns energy collected through a solar panel on top of the head The head moves every few minutes depending upon the amount of energy the solar panel captures